What is a potential consequence of viral insertion into a host genome?

Viral insertion into a host genome can lead to the mutation of genes, which is a significant consequence of this process. When a virus integrates its genetic material into the host's DNA, it can disrupt normal gene function either by directly altering the sequence of the host genes or by affecting regulatory regions that control their expression. This disruption can result in the alteration of protein production, potential malfunction of cellular processes, and can even lead to diseases, including various types of cancer.

The other options do not accurately capture the consequences of viral insertion. Increased immune response would typically be an effect of a viral infection rather than a direct consequence of insertion. Reduction of genetic disorders is unlikely, as genetic disorders are often associated with mutations, and viral insertions typically introduce new mutations, potentially exacerbating existing issues. Enhancement of biotechnology does not directly relate to the detrimental effects caused by viral mutations in a host genome, as this option would pertain more to the deliberate use of viral vectors in gene therapy rather than their potential harmful integration.